/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2015 Umeng, Inc
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.book.jtm.chap09.mock;

public class StuController {
    private StudentDAO mStudentDAO;

    public Student getStudentInfo(int sid) {
        Student student = null;
        if (mStudentDAO != null) {
            student = mStudentDAO.getStudentFromDB(sid);
        }
        if (student == null) {
            student = fetchStudentInfo(sid);
        }
        return student;
    }

    private Student fetchStudentInfo(int sid) {
        System.out.println("从网络上获取学生信息");
        Student student = new Student();
        student.id = 456;
        student.name = "server-user";
        return student;
    }

    public void setStudentDAO(StudentDAO dao) {
        this.mStudentDAO = dao;
    }
}
